Why can no program write to my /home partition in Gnome? (Gentoo/amd64)

Hello everyone, I have a tiny problem in Gnome 2.24 on Gentoo/amd64.

Not long ago I bought a 1 TB SATA hard drive. Being influenced by FreeBSD as I am, I partitioned it up into 7 partitions: /boot, swap, /, /var, /tmp, /usr and /home. However, upon switching to Gnome from Xfce I started noticing small problems in Gnome. Nautilus, and most other programs trying to access my /home folder, were blatantly ignoring my file permissions (which are set to 777). Neither logged in as user nor root could I change the file permissions in Nautilus. Here's what the Nautilus info window looks like:

I have already tried all the humanly possible with octal permissions, /etc/fstab and GDM configuration (I set RelaxPermissions=2 in GDM's custom.conf). So my question is this: how do I enable every program to write to my /home partition?